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r.sipahi@northeastern.edu

Faculty Profile

Biography

Sipahi received his BS from Technical University of Istanbul in 2000, and MS and PhD degrees respectively in 2002 and 2005 from University of Connecticut, all in mechanical engineering. His PhD dissertation is entitled "Cluster Treatment of Characteristic Roots, CTCR, A Unique Methodology for the Complete Stability Robustness Analysis of Linear Time Invariant Multiple Time Delay Systems against Delay Uncertainties" (advisor Professor Nejat Olgac).

Awarded with a Chateuabriand scholarship by the French government, he has been a postdoctoral fellow at Universite de Technologie de Compiegne, HeuDiaSyC Labs (CNRS) in France, where he worked with Professor Silviu-Iulian Niculescu (currently at L2S Supelec CNRS) during 2005-2006. In August 2006, he joined the Department of Mechanical and Industrial Engineering at Northeastern University, Boston, where he is currently an associate professor.

Sipahi is the recipient of the 2015 ASME Dynamic Systems and Control Division Outstanding Young Investigator Award, a 2011 DARPA Young Faculty Award, 2011 College of Engineering Martin W. Essigmann Outstanding Teaching Award, and 2014 College of Engineering Faculty Fellow Award. He has also been actively involved in ASME Dynamic Systems and Control (DSC) Division, taking editorial duties in division newsletter and recently in division-led ASME DSC Magazine. His scholarly activities include publication of 49 journal articles and 83 peer-reviewed conference papers, as well as 9 chapters and additional 28 conference presentations including invited session talks. His research has been funded primarily by US National Science Foundation and DARPA. He (co-)edited four book volumes with Springer each with around 400 pages (2009, 2012, 2013, 2017 (forthcoming)), which received over 100,000 chapter downloads to date. His Google Scholar h index is 26.

Sipahi has been actively involved as associate editor, associate editor at large, publicity chair, finance chair, outreach chair, program committee member, session chair/co-chair in many conferences organized by ASME, IEEE, and IFAC, including the 2012 IFAC Workshop on Time Delay Systems, which he co-organized at Northeastern University, and of which he was the Program Editor. He is also the co-creator of e-delay newsletter together with Prof. Niculescu, which has about 1,500 members. He was the lead organizer of three one-full-day educational workshops with Professors Hitay Ozbay, Silviu-Iulian Niculescu, Wim Michiels, Dimitri Breda, and Fatihcan M. Atay in the field of Time Delay Systems at three major control systems conferences (2013, 2014 European Control Conference, and 2013 IEEE Conference on Decision and Control) as well as the sole organizer of a similar workshop held preceding the ASME Dynamic Systems and Control Conference in 2015. He is the lead author of the article entitled Stability and Stabilization of Systems with Time Delay, Limitations and Opportunities that was published in 2011 in IEEE Control Systems Magazine, with S.-I. Niculescu, C.T. Abdallah, W. Michiels and K. Gu as co-authors.

Sipahi is a Fellow of ASME since 2014 and was elevated to IEEE Senior member grade in 2016.  He currently serves as Associate Editor for Automatica.

Education

  • PhD (2005), Mechanical Engineering, 
    University of Connecticut
  • MSc (2002), Mechanical Engineering,
    University of Connecticut
  • BSc (2000), Mechanical Engineering,
    Istanbul Technical University

Research & Scholarship Interests

Control systems and mechatronics, stability analysis; control synthesis of dynamical systems with delays; interplay between stability, delays, and graphs; network systems and control; control-systems-aided human-machine systems; engineering education research, disability research, with recent interests in systems biology, tissue growth and regeneration modeling (with Professor Gunther Zupanc, Biology) and adaptive queue management in access control problems in healthcare settings (with Prof. Jim Benneyan, MIE)
Affiliated With

Department Research Areas

College Research Initiatives

Honors & Awards

  • 2017 Associate Editor, Automatica
  • 2016 IEEE Senior Member
  • 2015 ASME Dynamic Systems and Control Division Young Investigator Award
  • 2014 COE Faculty Fellow
  • 2014 ASME Fellow
  • 2011 DARPA Young Faculty Award.
  • 2011 Martin W. Essigmann Outstanding Teaching Award of the College of Engineering, Northeastern University.
  • 2011 Nominated for the Excellence for Teaching Award of Northeastern University.
  • Lead author of the review article published and featured as cover in IEEE Control Systems Magazine February 2011 issue.
  • 2005 Chateaubriand Scholarship to conduct post-doctoral research in France, awarded by the French Government.
  • 2003 Best Master’s Thesis Award of School of Engineering, University of Connecticut.
  • 2002 Best Student Paper Award from Dynamic Systems and Control Division at ASME-IMECE Conference, New Orleans, LA.

Teaching Interests

  • System Analysis and Control (graduate and undergraduate)
  • Time Delay Systems, Stability and Control (graduate level)
  • Introduction to System Dynamics (Honors Program, undergraduate level)
  • ME Capstone (senior design)

Professional Affiliations

  • American Society of Mechanical Engineers International
  • Institute of Electrical and Electronics Engineers

Selected Publications

  • Parsinejad, P., Sipahi, R., 2017, Analysis of Subjects' Vulnerability in a Touch Screen Game Using Behavioral Metrics, online, Applied Psychophysiology and Biofeedback.
  • Yucelen, T., Yildiz, Y., Sipahi, R., Yousefi, E., Nguyen, N., 2017, Stability Limit of Human-in-the-Loop Model Reference Adaptive Control Architectures, online, International Journal of Control.
  • Ramirez, A., Sipahi, R., 2017, Design of a delay-based controller for fast stabilization in a network system with input delays via the Lambert W function, accepted, invited, Procedia IUTAM.
  • Ramirez, A., Mondie, S., Garrido, R., Sipahi, R., 2017, Design of maximum exponential decay rate for LTI-SISO systems via delay-based controllers, SIAM Control and Optimization, 55(1), 397-412.
  • Zhi, N., Gouldstone, A., Jaeger, B.K., Sipahi, R., Frank, S., 2017, Toward Monitoring Parkinson’s through Analysis of Static Handwriting Samples: A Quantitative Analytical Framework, IEEE Journal of Biomedical & Health Informatics, 21(2), pp. 488-495.
  • Koh, M. H., Sipahi, R., 2016, A Consensus Dynamics with Delay-Induced Instability can Self-Regulate for Stability via Agent Regrouping, Chaos: An Interdisciplinary Journal of Nonlinear Science, 26(11), 116313.
  • Tian, D., Sipahi, R., 2016, Creating Two Disjoint Stability Intervals along the Delay Axis via Controller Design: Linear SISO Case, available online, International Journal of Dynamics and Control.
  • Nourazari, S., Hoch, D.B., Capawanna, S., Sipahi, R., Benneyan, J.C., 2016, Can improved specialty access moderate emergency department overuse? Effect of neurology appointment delays on ED visits, Neurology Clinical Practice, 6(6), pp. 498-505.
  • Ulusoy, M., Sipahi, R., 2016, Experimental Evaluation of a Braille-Reading-Inspired Finger Motion Adaptive Algorithm, PLoS One, 0148356, pp 1-23.
  • Ramirez, A., Mondie, S., Garrido, R., Sipahi, R., 2016, Design of Proportional Integral Retarded Controllers, IEEE Transactions on Automatic Control, 61(6), 1688-1693.
  • Qiao, W., Sipahi, R., 2016, Consensus Control under Communication Delay: Experiments on a Three-Robot System, IEEE Control Systems Technology, 24(2), 687-694.
  • Sipahi, R., 2014, Delay-Margin Design for the General Class of Single-Delay Retarded-Type LTI Systems, International Journal of Dynamics and Control, 2(2), 198-209.
See Google Scholar Profile for all publications »

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